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Cushion|Lab Grown|IGI

1.09ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG847642187

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG847642187

Diamond specifications and retailer prices

From $324 USD
£255 GBP
As of October 31, 2026
1 retailer carries this diamond
Only listing: $324 USD at 77 Diamonds
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at 77 Diamonds

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG847642187 or 847642187. Listed at a single retailer as of October 31, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.09
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.9°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG847642187
Dimensions6.04 × 5.91 × 4.04 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.04 mm5.91 mm1.09 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG847642187
Side View
Table 61.0%Crown 33.9°Girdle: MED-THKPavilion 40.3°Culet: NoneDepth 68.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: $324 USD|Low: $324 USD|High: $326 USD|Avg: $325 USD|-0.2%
October 31, 2026
77 Diamonds$324 USD

5 data points across 1 retailer

1 retailer

B+
77 Diamonds
CUSTVS5BQUY2T3 · Oct 31
$324 USD
£255 GBP
View

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
1.09ct Cushion
$324 USD